Foren / Cotonti / Support / variable inside {FILE construction

Is there a way to include PHP variable (from module or plugin) inside construction {FILE "themes/nemesis/foo.tpl"}  ?

like if $foo changing value and i put {FILE "themes/nemesis/inc/$foo.tpl"}

thanks, man!

I didn't check that double brackets will work...

...
but as checked, I see that text inside of {FILE become "static" - example

$foo = '"themes/nemesis/inc/agro.tpl"';

line in template: {FILE {PHP.foo} }

browser give me: {FILE "themes/nemesis/inc/agro.tpl" } - but not the content of agro.tpl - which is the function of {FILE ,,

the same...

So, does it work on other sites or it's a bug?